Rank	Journal	Value
1	Journal of Petroleum Science and Engineering	21
2	Petroleum Exploration and Development	17
3	Journal of Petroleum Exploration and Production Technology	7
-	SPE Reservoir Evaluation & Engineering	7
5	SPE Drilling & Completion	5
-	SPE Journal	5
7	Petroleum Science and Technology	3
8	Journal of the Japan Petroleum Institute	2
-	Petroleum Chemistry	2
-	SPE Production & Operations	2
-	Oil Shale	2
12	CT&F-Ciencia Tecnologia y Futuro	1
-	International Journal of Oil Gas and Coal Technology	1
-	Chemistry and Technology of Fuels and Oils	1
15	Petrophysics	0